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Question

The keys are based on the contrasting characters generally in a pair called

A
lead
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B
couplet
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C
flora
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D
monograph
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Solution

The correct option is B couplet
Key is a taxonomic aid used for identification of plants and animals based on the similarities and dissimilarities. The keys are based on the contrasting characters generally in a pair called couplet. Based on the two contrasting descriptions of the organism the description that fits the unknown organism is chosen and based on the choice from the successive couplets, the type of organism and its place in the taxonomic hierarchy can be determined.

Every statement in a particular key is called a lead. Flora and monographs are some other means of recording descriptions. Flora contains the actual account of habitat and distribution of plants of a given area. While monographs contain information based on the systemic study for a particular organism or the taxonomic group where it belongs.


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